Researchers report a van der Waals heterostructure photodetector consisting of graphene and its fluorine-functionalized derivative that enhances the photoresponse of graphene with broadband sensitivity. The proposed scheme in this work paves the way toward implemention of high-performance broadband graphene-based photodetectors.
Scientists ran a series of atomistic calculations a to find the root cause of defects in two commonly used semiconductor materials - lead selenide (PbSe) and cadmium selenide (CdSe) - and provide design rules to avoid them.
The average, everyday person might not be familiar with gallium nitride, also known as GaN, but there is a good chance they've heard of silicon, a semiconductor that's been used for decades and found in every computer and most electronics.
When oil mixes with or enters into water, conventional methods of cleaning the water and removing the oil can be challenging, expensive and environmentally risky. But researchers believe they may have developed a better method.
The endothelial cells that line blood vessels are packed tightly to keep blood inside and flowing, but scientists have discovered it may be possible to selectively open gaps in those barriers just enough to let large molecules through - and then close them again.
Instead of using a train of soliton pulses in an optical fiber, researchers generated continuously circulating optical solitons in compact silicon nitride optical microresonators. These continuously circulating solitons lead to broadband optical frequency combs.